Create Multiple Marker Map from ACF Google Map Location Field from a CPT on Genesis

Here is a run down on how to get a multiple marker Google map on a page that contains markers for a dealer that has it’s own Custom Post Type. Each dealer has it;s own CPT with an individual map location marker and also another agnostic page has all the dealers markers in a multi marker map.

acf-multiple-marker-map-dealer

 

Set Up Your CPT

Create your CPT this example uses dealer. I use a code gist I am familiar with for CPTs, a plugin option which is great is WebDev CPTui.

Create ACF Field Group

acf-goole-map-field-type-location

Get ACF Pro and create a new field group, in the group add your required fields for the CPT and include the location field as a Google Map field type.

acf-field-group-dealer-cpt

Set the ACF field group to appear on the dealer CPT.

Create you ACF Google Map Javascript Code

Add a JS file in your /js theme folder – this example uses dealer.js

(function($) {
/*
* new_map
*
* This function will render a Google Map onto the selected jQuery element
*
* @type function
* @date 8/11/2013
* @since 4.3.0
*
* @param $el (jQuery element)
* @return n/a
*/
function new_map( $el ) {
// var
var $markers = $el.find('.marker');
// vars
var args = {
zoom : 16,
center : new google.maps.LatLng(0, 0),
mapTypeId : google.maps.MapTypeId.ROADMAP
};
// create map
var map = new google.maps.Map( $el[0], args);
// add a markers reference
map.markers = [];
// add markers
$markers.each(function(){
add_marker( $(this), map );
});
// center map
center_map( map );
// return
return map;
}
/*
* add_marker
*
* This function will add a marker to the selected Google Map
*
* @type function
* @date 8/11/2013
* @since 4.3.0
*
* @param $marker (jQuery element)
* @param map (Google Map object)
* @return n/a
*/
function add_marker( $marker, map ) {
// var
var latlng = new google.maps.LatLng( $marker.attr('data-lat'), $marker.attr('data-lng') );
// create marker
var marker = new google.maps.Marker({
position : latlng,
map : map
});
// add to array
map.markers.push( marker );
// if marker contains HTML, add it to an infoWindow
if( $marker.html() )
{
// create info window
var infowindow = new google.maps.InfoWindow({
content : $marker.html()
});
// show info window when marker is clicked
google.maps.event.addListener(marker, 'click', function() {
infowindow.open( map, marker );
});
}
}
/*
* center_map
*
* This function will center the map, showing all markers attached to this map
*
* @type function
* @date 8/11/2013
* @since 4.3.0
*
* @param map (Google Map object)
* @return n/a
*/
function center_map( map ) {
// vars
var bounds = new google.maps.LatLngBounds();
// loop through all markers and create bounds
$.each( map.markers, function( i, marker ){
var latlng = new google.maps.LatLng( marker.position.lat(), marker.position.lng() );
bounds.extend( latlng );
});
// only 1 marker?
if( map.markers.length == 1 )
{
// set center of map
map.setCenter( bounds.getCenter() );
map.setZoom( 16 );
}
else
{
// fit to bounds
map.setCenter( bounds.getCenter() );
map.setZoom( 2 ); // Change the zoom value as required
//map.fitBounds( bounds ); // This is the default setting which I have uncommented to stop the World Map being repeated
}
}
/*
* document ready
*
* This function will render each map when the document is ready (page has loaded)
*
* @type function
* @date 8/11/2013
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
// global var
var map = null;
jQuery(document).ready(function($){
$('.acf-map').each(function(){
// create map
map = new_map( $(this) );
});
});
})(jQuery);
view raw acf-js.js hosted with ❤ by GitHub

Original JS from ACF here. Mine is slightly modified.

Get Your Google Map API

Get a Google Map Key – click on Get a Key

Set Up ACF JS and API Dependencies

You need to enqueue the ACF JS and Goole Map API files for output to render.

<?php
// Add in your functions.php
// Enqueue Google Map scripts
function themeprefix_google_map_script() {
wp_enqueue_script( 'google-map', get_stylesheet_directory_uri() . '/js/dealer.js', array( 'jquery' ), '1.0.0', true );
wp_enqueue_script( 'google-api', 'https://maps.googleapis.com/maps/api/js?key=AIzaSyDp1yayYfK-qOod7Kpt2x8u3Q8ZiuxMybc', null, null, true); // Add in your key
}
view raw acf-map-js.php hosted with ❤ by GitHub

Add a bit of CSS

.acf-map {
	width: 100%;
	height: 400px;
	border: #ccc solid 1px;
	margin: 20px 0;
}

/* fixes potential theme css conflict */
.acf-map img {
   max-width: inherit !important;
}

 

Display Single CPT Map Field

So first if you are also displaying the Google Map as a single map on the dealer CPT you’ll need to output the custom location map field and fire the JS and API files – here I am adding this code directly in the CPT template – so in my single-dealer.php

<?php
add_action( 'wp_enqueue_scripts', 'themeprefix_google_map_script' ); // Firing the JS Map and API
add_action( 'genesis_entry_content', 'themeprefix_add_marker' ); // Hook in the field
// ACF Google Map Single Map Output
function themeprefix_add_marker() {
$location = get_field('location'); // Set the ACF location field to a variable
if( !empty($location) ) {
?>
<div class="acf-map">
<div class="marker" data-lat="<?php echo $location['lat']; ?>" data-lng="<?php echo $location['lng']; ?>">
<h4><a href="<?php the_permalink(); ?>" rel="bookmark"> <?php the_title(); ?></a></h4> <!-- Output the title -->
<p class="address"><?php echo $location['address']; ?></p> <!-- Output the address -->
</div>
</div>
<?php
}
}
view raw single-map.php hosted with ❤ by GitHub

 

Display Multiple Markers in one map for all CPT dealer posts

I have created a custom page page-all-dealers.php which I am outputting one map with all the markers using a while loop

<?php
add_action( 'wp_enqueue_scripts', 'themeprefix_google_map_script' ); // Firing the JS and API
add_action( 'genesis_entry_content', 'themeprefix_add_marker_loop' );
// Output all dealers via a custom loop of the Dealer CPT and show the title and address field in the marker and link that to the Dealer CPT
function themeprefix_add_marker_loop() {
$args = array(
'post_type' => 'dealer',
'posts_per_page' => -1,
);
$the_query = new WP_Query($args);
echo "<div class='map-container'><div class='wrap'><div class='acf-map'>";
while ( $the_query->have_posts() ) : $the_query->the_post();
$location = get_field('location');
$title = get_the_title(); // Get the title
if( !empty($location) ) {
?>
<div class="marker" data-lat="<?php echo $location['lat']; ?>" data-lng="<?php echo $location['lng']; ?>">
<h4><a href="<?php the_permalink(); ?>" rel="bookmark"> <?php the_title(); ?></a></h4>
<p class="address"><?php echo $location['address']; ?></p>
</div>
<?php
}
endwhile;
echo '</div><</div></div>';
wp_reset_postdata();
}
genesis();
view raw all-markers.php hosted with ❤ by GitHub

Cool thing here is you can add what you want in between the .marker div and this will appear in the pop up when you click the marker, here i have added the_permalink() so when clicked will go to the original post!

 

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